INDISTINGUISHABLE Synonyms: 133 Similar and Opposite Words

indistinguishable

adjective

ˌin-di-ˈstiŋ-gwi-shə-bəl

Definition of indistinguishable

as in invisible

not perceptible by a sense or by the mind indistinguishable differences that can be measured only electronically

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in vague

not seen or understood clearly indistinguishable shapes in the fog

Synonyms & Similar Words

Antonyms & Near Antonyms

as in identical

resembling another in every respect a synthetic fabric that supposedly is indistinguishable from real silk

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of indistinguishable Even after much tribulation, the researchers were finally able to test if photons traveling through the instrument’s circuits were indistinguishable. — Ameya Paleja, Interesting Engineering, 28 Sep. 2026 Inside the brain, physical and social pain are nearly indistinguishable. — George Loewenstein, Vogue, 28 Sep. 2026 Efficient, functional and increasingly indistinguishable from everything else. — Jennifer Jones, Forbes.com, 28 Sep. 2026 Molecular testing, something relatively novel at the time, was used to show that isolates recovered from patients, from four powder-containing envelopes, and from environmental samples were indistinguishable, indicating a common source. — Daniel Jernigan, STAT, 26 Sep. 2026 See All Example Sentences for indistinguishable

Recent Examples of Synonyms for indistinguishable

Adjective

Self-attestation is how most AI security gaps stay invisible until an incident forces a look.

— TJ Marlin, Forbes.com, 16 Oct. 2026
Gabi Abrão is a writer and internet entity from Los Angeles whose work aims to develop a language with the invisible.

— Gabi Abrão, Los Angeles Times, 16 Oct. 2026

Definition of invisible

Adjective

Recent criticism The century-old restaurant guide is famous for its secrecy; its inspectors are anonymous and the company releases only vague information about their evaluation process.

— Henri Hollis, AJC.com, 20 Oct. 2026
The plaintiffs had argued those terms were vague, and that the council selectively used them to silence prominent critics, violating their First Amendment rights.

— Danya Gainor, CNN Money, 20 Oct. 2026

Definition of vague

Adjective

Last year, an investigation by Consumer Reports, Groundwork Collaborative and More Perfect Union found that shoppers on Instacart were shown different prices for identical products at the same stores.

— Arkansas Online, Arkansas Online, 19 Oct. 2026
To test their hypothesis, the team set up their system in one of three identical chicken houses at the same commercial chicken farm in Sakarya.

— Christopher McFadden, Interesting Engineering, 17 Oct. 2026

Definition of identical

Adjective

Instead, his team developed SynthID, an imperceptible, incorruptible digital watermark now stamped to anything generated by Google AI, but also OpenAI, Nvidia, Kakao, and, soon, Apple.

— Daniel Varghese, Time, 15 Oct. 2026
Through a meditative duet between the performer’s cognition and their autonomic nervous system, activities that were largely imperceptible to an outside observer became known to the performer.

— Sophie Landres, Artforum, 1 Oct. 2026

Definition of imperceptible

Adjective

The physiological case for a brief dunk is, by her own account, comparable.

— Samantha Agate, Fort Worth Star-Telegram, 20 Oct. 2026
According to Inception, Mercury 3 is more than 40 times larger than its first-generation model, Mercury 1, while maintaining comparable processing speeds.

— Neetika Walter, Interesting Engineering, 19 Oct. 2026

Definition of comparable

Adjective

Coleman said each design has its own distinct character and can be styled individually, either as a subtle everyday detail or a sculptural statement.

— Tianwei Zhang, Footwear News, 15 Oct. 2026
As the researchers saw, introducing random mutation could still make subtle structural tweaks that produced enzymes that were considerably more active.

— ArsTechnica, ArsTechnica, 14 Oct. 2026

Definition of subtle

Browse Nearby Words

indistinctness

indistinguishable

indistinguished

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Style

“Indistinguishable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/indistinguishable. Accessed 21 Oct. 2026.

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Synonyms of indistinguishable

adjective

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